[linux-dvb] Wide Screen Signalling (WSS)

Hans Verkuil hverkuil at xs4all.nl
Wed Jan 4 21:10:18 CET 2006


On Wednesday 04 January 2006 07:57, Oliver Endriss wrote:
> Oliver Endriss wrote:
> > I need an interface to pass WSS data from userspace to the av7110
> > driver[1]. In videodev2.h there are some definitions but the
> > comment
> >
> > does not sound very promising:
> > | /* Sliced VBI
> > |  *
> > |  *    This implements is a proposal V4L2 API to allow SLICED VBI
> > |  * required for some hardware encoders. It should change without
> > |  * notice in the definitive implementation.
> > |  */
> >
> > And , according to the V4L2 API spec rev 0.8,
> > 'This interface is not yet implemented in v4l2'.
> >
> > I wonder whether I should invent an av7110-specific ioctl or use
> > this interface. Any comments?
>
> Hans Verkuil wrote:
> > Use this interface. The next V4L2 API spec will contain the updated
> > documentation. I'll mail you the specs off-list. See the saa7127.c
> > module for an example on how this interface is used.
>
> Ok, here we go. Patch for the saa7146/av7110 driver:
> http://www.escape-edv.de/endriss/dvb/v4l-dvb-wss-v2.diff
> I hope that I implemented the API correctly. ;-)
>
> This is a small tool which I wrote for testing:
> http://www.escape-edv.de/endriss/dvb/wsstest.c

Speaking only of the sliced VBI changes: that looks good to me.

	Hans



More information about the linux-dvb mailing list